Processing

Please wait...

Settings

Settings

Goto Application

1. WO2007027429 - REDUCTION OF IMAGE ARTIFACTS IN DIGITAL PRINTING

Publication Number WO/2007/027429
Publication Date 08.03.2007
International Application No. PCT/US2006/031797
International Filing Date 16.08.2006
IPC
H04N 1/407 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
1Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
40Picture signal circuits
407Control or modification of tonal gradation or of extreme levels, e.g. background level
B41M 1/06 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
MPRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
1Inking and printing with a printer's forme
06Lithographic printing
B41M 5/00 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
MPRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
5Duplicating or marking methods; Sheet materials for use therein
B41N 1/00 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
NPRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE OR CONSERVING THEM
1Printing plates or foils; Materials therefor
CPC
H04N 1/407
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
1Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
40Picture signal circuits
407Control or modification of tonal gradation or of extreme levels, e.g. background level
Applicants
  • EASTMAN KODAK COMPANY [US]/[US] (AllExceptUS)
  • BLAUS, Ilan [IL]/[IL] (UsOnly)
  • NACASH, David [IL]/[IL] (UsOnly)
Inventors
  • BLAUS, Ilan
  • NACASH, David
Common Representative
  • EASTMAN KODAK COMPANY
Priority Data
11/216,94931.08.2005US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) REDUCTION OF IMAGE ARTIFACTS IN DIGITAL PRINTING
(FR) RÉDUCTION D’ARTÉFACTS D’IMAGE EN IMPRESSION NUMÉRIQUE
Abstract
(EN)
An apparatus and method of reducing image artifacts on ink coverage areas of a lithographic printing plate are provided. The method includes providing digital image data including ink coverage pixel values; reducing the ink coverage pixel values by a predetermined amount by applying a transformation to the digital image data; and imaging a printing plate using the transformed digital image data. The apparatus includes a processor operable to apply a transformation to received digital image data to reduce ink coverage pixel values included in the digital image data by a predetermined amount; and an imaging device operable to image a printing plate using the transformed digital image data with the imaging device being in electrical communication with the processor.
(FR)
Cette invention concerne un dispositif et un procédé destinés à réduire des artéfacts d’image sur des zones de couverture d’encre d’une plaque d’impression lithographique. Le procédé consiste à obtenir des données d’image numériques comprenant des valeurs de pixel de couverture d’encre, à réduire ces valeurs de pixel d’une quantité préétablie par application d’une transformation aux données d’image numériques, et à reproduire une image sur une plaque d’impression à l’aide des données transformées. Le dispositif comprend un processeur permettant d’appliquer une transformation aux données d’image numériques reçues pour réduire les valeurs de pixel de couverture d’encre comprises dans ces données d’une quantité préétablie, et un dispositif d’imagerie permettant de reproduire une image sur une plaque d’impression à l’aide des données transformées, le dispositif d’imagerie étant relié électriquement au processeur.
Latest bibliographic data on file with the International Bureau